So i noticed lately that my bp has not been as active as it normally is since the last time i gave him food. i have not noticed any poop in his cage and i feed him like a week and a half ago and is was a adult mouse. and i noticed small black dots on his belly but i cant tell if its substrate or not and some disformed scales right behind his head. i am kinda worried i have been trying to keep his humidity up since it is winter and i am in alaska. and the temp is at about 75-85 but at max 90 and is it normal when they get older to be less active? i am worried if he has mites? and any advice would be helpful